The Tool Command Language implementation
A powerful, cross platform, SQL database system
INSTEAD - Simple Text Adventure Interpreter.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Simple and flexible programming language for applications development
A BASIC interpreter and compiler with graphics.
Programming language with expressive power and a simple implementation
2D Game Engine
BASIC language interpreter (multiplatform)
The Simple Intelligent and Modular Programming Language & Environment
A cross-platform interpreter for many point-and-click adventure games
C++ cross plattform functional block programming
Graphical interpreter
Mobile App designer + interpreter
Android and J2ME(Blackberry) Interactive Fiction Z-machine interpreter